Dye jig



Patented Nov. 2, 1937 DYE ne Bradford c. Gibbs, cumberlana, Ma., signor u i Celanesc Corporation of America, a corporation of Delaware Application February 14, 1935, Serial No. 6,419

2Clalms.

This invention relates to a method of dyeing materials containing thermoplastic filaments or fibers and to a device for performing the method wherein the fabric or textile material is under 5 uniform tension throughout its length.

v A n object of the invention is the economic and expeditious dyeing or otherwise treating of thermoplastic textile materials in warm or hot liquid baths. Another object of the invention is the 1U construction of a device which makes uniform 1 treatment of textile materials more automatic and uniform. Other objects of the invention will appear from the following detailed description. I In the drawing. wherein like reference numerals refer to like or similar elements, there is shown a device that forms .a part of this invention. In the drawing A Fig. 1 is a side elevation, in section, of a dye jig constructed according to this invention.

Fig. 2 is an enlarged view of a section of the device taken on the line 2 2 of Fig. l.

Fig. 3 is an enlarged view of a section of the device taken on the line 3--3 of Fig. l.

In the treatment of fabricscontaining thermcplastic materials or materials that are plasticized by certain treating liquids a moir effect is produced which is not always desirable. This is due to unequal tension upon the fabric. y By employing this invention fabrics may be washed,

scoured, dyed and otherwise treated without developing a moir effect therein.

In accordance with my invention, I maintain an even tension` on textile materials while they are being treated in a liquid. Further, in accordance with my invention, I construct a device that is labor saving and which maintains auto.-

` matically an even tension upon the textile materials treated in a bath.

'Ihis invention is applicable to the treatment of any kind of textile material which is woven, knitted or knotted into a fabric'like material. It is, however, particularly applicable to textilematerails which contains yarns that are placticized,

softened or otherwise made more susceptible to stretching and elongation in the presence of liquids and/or heated treating baths. Thus, the invention is particularly applicable to fabrics containing organic derivatives of cellulose such as the organic esters of cellulose and the cellulose ethers. Examples of organic esters of cellulose are cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while examples of cellulose ethers are methyl cellulose. ethyl cel- 55 lulose and benzyl cellulose.

It is not necessary that the fabric being 'treated be made entirely of yarns or filaments containing the type of material described above, but they may be mixtures of such yarns and filaments and other yarns and filaments which are little af- 6 fected by heated treating baths. For instance, fabrics which may be beneficially processed by this invention are those which contain fibers and filaments of an "organic derivative of cellulose mixed with fibers or filaments of other materials l0 such as cotton, wool, silk, etc.r- Either the yarns themselves may be formed of ilbersof different materials or yarns or filaments or fibers of organic derivatives of cellulose may be woven with or otherwise processed with yarns containing 15 fibers and filaments of other materials. Thus, yarns of organic derivatives of cellulose may be alternated with yarns of cotton or wool in either the warp or the weit or both in the formation of woven fabrics. 20

'The primary object of the invention is the treatment of such'materials in a liquid or heated liquid bath while an even tension is maintained upon thefabric, as it is being treated, throughout itsr full length, thereby preventing 25 moire effects from being built up due to uneven tension andalso avoiding uneven stretching of various sections oi' the material. 'The differential of tension which is necessary asthe fabric is being processed is made automatic by this in- 30 vention, the Atension being responsive to the pull of the fabric and regulated thereby. v

As an aid in visualizing this invention, the same will b'e described with reference to the accompanying drawing wherein a device forfcarry- 35 ing out thisinvention, and litself forming'a part of this invention, is shown. In the drawing I is a conventional type ofy container used in connection "with a 'dye jig. The container i may Y be provided with uprightsvfor supporting a shaft y4,0 2 on one sideand a shaft 3 on the other side of the container. A plurality of guide rolls 4 may be positioned in the container for guiding the materialthrough the container such-that it will be submergedv and evenly treated by the liquids con- 45 tained therein. Further, uprights may be provided onthecontainer l midway between the shafts 2 and I for supporting in a rotatable man- `nerfs.' shaft 5..

A spacer bar 'I may benen-rotatably fastened .50 to the shaft 5 such that upon rotation of the bar I a corresponding rotation of the shaft 5 is produced. There may be adjustably mounted upon the shaft I, at one or both ends of the dye jig, a bell crank lever which may beheld in fixed po- 55 sition on the shaft 5 by means of a set screw i. The bell crank lever may be formed of two arms 9 and 9 substantially at right angles to each other, which arms are substantially similar in proportion and construction and, therefore, a description ofone arm only will Vbe given.

The arm 9 may be positively fastened to a header 24 adapted to act as a bearing for the same on the shaft 5. The opposite end of the arm l may be turned at right angles to the main portion thereof and have a hole made therein which acts as a bearing for a shaft II. The shaft II may be threaded throughout a substantial part 'ofits length and have one end adapted to vbe journaled in the header-24 and a part of the other end adapted to be journaled in the end piece of the arm 9. The shaft II may be rotated by hand wheel III. Adapted to ride on the arm 9 and be positioned by rotation of the threaded section of the shaft II is a block I2.

On the shaft 2 there may be provided a brake drum I3 of any conventional type, while on the shaft 3 there may be provided asimilar brake drum I4. About the drum I2 there may be provided a brake band I5 while around the brake drum I4 there may be provided a brake band I6. 'Ihe brake band I5 may be operatively connected to a block, similar to block I2, mounted on arm l through a spring I1 and a turn buckle Il. while brake band I6 may be operatively connected to the block I2 on the arm 9 through a spring I8 and a turn buckle I9. The turn buckle I9 may be formed of a threaded member 29 and a threaded member 2| having threads of opposite direction, which thread members are relatively movable by means of a coupling member adapted to be manually rotated, as is well understood in the art and shown in Fig. 2. The block I2 may have an extended portion 22 having a slot therein adapted to receive a flattened portion of the threaded member 2l, which threaded member is held in communication therewith by means of a pin 22.

The band IB may be held in position by a pin 25 connected to the main frame. or the upright of the main frame, while the band r11 maybe held in position by a similar pinl 28 alsb connected to the main frame'or the other upright of the main frame. Mounted on the rotating arm 1 may be guide rollers 21 for reducing the friction of the textile material passing over same.v

Theshafts 2 and 2 may berotatedbyanysuitable means, for instance, by hand, or by being geared to a source of power such as anelectric motor.

In operation, when a roll of fabric is being dyed on a jig the cloth from jig roll on shaft 2, for instance, over the guide `roller' 21 attached to the arm 1 through the bath over the opposite guideroller 21 and on to the other .iig roll on shaft 2. The guide rollers 21 being mounted` on the bar 1 which is pivoted at its center. naturally follow a certain' path with respect to the pivot point, the amount of travel depending on the sise of the rolls ofthe fabric. yThis brake is designed sothatamaximumoftensionisonthe drum on, the side which contains anda minimum of tension onthe empty Asshownonthedrawing,thero1lon a maximumtension and the roll on a minimum tension.

censos Referring more particularly to the drawing, it will be seen that as the fabric on the roll on shaft 2 is being transferred to the roll on shaft 2 the spring I1 loses its tension in direct proportion to the size of the roll untilit reaches the point where -the roll is empty, at which time the spring is entirely released and has no brakingpower. In the meantime the spring I8 increases its tension from zero up to the maximum as the size of the roll increases. The braking power on this side, however, only-increases slightly due to the rotation of the drum against the action of .the spring. The full braking power due to the spring tension is not exerted until the rotation is reversed, at which time the brake acts as a snub, being fixed at one end and having a spring on its other.

'I'he amount of tension may be adiusted by changing the position of turnbuckles I9 and blocks I2. In order thatthe tension on spring I1 is always released when roll is empty, it is neces` sary that bell crank lever be made such that arms 2 and 9 are substantially at right angles and are mounted innon-rotatablerelation on the shaft 5 and at the proper angle thereto, which may be determined in the field when assembling by trial.

When employing the device shown in the drawing. a ready adjustment may be made in order to make the device suitable for the treatment of any type of material. After the tension required by dinerent qualities of fabric is determined, for instance, by trial, the turnbuckles and bell crank lever may be graduated or marked so that the same tension may always be used on fabrics of the same quality, thus enabling the production of more uniform pieces of fabric. It is to be understood that the foregoing detailed description and drawing are given merely by way of illustration and that many variations may be made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. In a device for treating fabrics wherein the fabric during treatment is unwound from one roll and wound upon another rcll, a combination with a brake operatively connected toeach of said rolls, of a shaft, a member on said shaft, operable by an unrolled portion of the fabric, adapted to decrease the braking action on one roll and simultaneously to increase the braking action on the other roll. and means on said shaft and movable with said member for initially adjusting the tension exerted on said rolls by said brakes.

2. In a device for treating fabrics wherein the fabric during treatment is unwound from one roll and wound upon another roll, a combination with a brake operatively connected to each of said rolls, of a member, operable by an unrolled portion of the fabric, adapted to decrease the braking action on one roll and simultaneously to increase the braking action on the other roll and means for initially adjusting the tension exerted on said rolls by said brakes, said tension adjusting means including a bell crank lever having a screw-threaded shaft on each arm thereof, a block adapted to move along each ofl said shafts and means connecting said blocks to said brakes.

BRADFORD c. amas.

CERTIFICATE 0F- CORRECTION, A .i Patent Noa ,2,097,592.` November 2, 1957;` BRADFORD c. GIBBS.'

It is herab;r certified that error appears in the printed specification Y of the above numbered patent requiring correction as follows: Page vl,l}i`1 .rst l column, line 142, after "knitted" insert the comme and wordnettecl?l g line [r3-hip, for "materals" read materials; line 1414., for placticized tczed; and that the s ad Letters Patent 'should be readwith `1:he se cor' rections therein 'that the same may conformto the 'record o1?v the case in the Patent Office, y

signed `met sealed this 21st daypf Dwenmsuer,A A. D'. 1957;

Henry: van Arsd1e, (Seal) read plajl 'Y .i Coms'sioner of*Pnto'xite.w 

